Yes, I've heard about this pogo stick/sling shot effect they have. Is it that bad or is there any way or curing this?

No remedy for it. It's just the way the bike was designed. Some people like it - I didn't...it seriously rode like a Walmart bike. I sold it less than a year, after I bought it, for a 2001 Cannondale - which I love and still have, to this day.

"This is a male-dominated forum... there will be lots of Testosterone sword-shaming here" ~ Kenfucius

Test rode one many years ago when I was in the market for a new bike. It was the first duallie I ever rode and I thought "Wow, this is cool." Then I test rode a GT LTS and realised how much better it rode. I ended up buying the LTS.

Dunno if some stable platform shock would overcome the pogo-ing, but nothing would overcome the fact that it's a URT with a pivot placement akin to a department store kids bike.

Recently started dating great woman. Over to her house for dinner, and in the garage is a yellow Y22. Kinda cool. Her late husband's. A race number still attached. I'd take a pic, but it'd be kinda weird explaining to my new lay, er, woman in my life that the photo is gonna be plastered on mtbr.

Rode my friend's Y bike in college. The memory of being catapulted over a Tahoe rock still looms fresh in my concussed mind.

Recently started dating great woman. Over to her house for dinner, and in the garage is a yellow Y22. Kinda cool. Her late husband's. A race number still attached. I'd take a pic, but it'd be kinda weird explaining to my new lay, er, woman in my life that the photo is gonna be plastered on mtbr.

Rode my friend's Y bike in college. The memory of being catapulted over a Tahoe rock still looms fresh in my concussed mind.

Nah. She won't notice the picture as much as you calling her your new lay.

Trek Y Bikes, unfair reviews, from different experiences..

I had heard the Bad reviews, yet I still ended up on a Early 90's Y-3 which I rode for years. The pogo effect everyone speaks of, happens when the shocks arent set up right. When the fork and shock are dialed in, more so on the stiff side, I found these bikes work well. With the drive all on the swingarm, there is no chain tugging or input from rear wheel travel.
Recently I stepped up my Y-bike to a Carbon Y22, which was one of the lightest FSR bikes ever. It weighs in at 23 lbs, and is solid, fun ride.
Its not my only bike, but I consider it one of my main rides.